Product details:
These timers provide flexibility, easy installation, and silent operation. The timers provide a to-the-second accuracy time range from 1 second to 24 hours. Provides true 3-way control allowing the load interval to be stopped/started using a standard mechanical switch. CR2 lithium battery provides a minimum of 2 years of operation without AC power. No neutral required. User settings stored in non-volatile memory. Low battery indicator. ADA Compliant. User-selectable advance end-of-interval visual or audible warning. Controls all voltages and frequencies with no adjustments required. CFL/LED.